Same account, two different creditors

I noticed on my credit report that I have an account listed twice. One by the original creditor and one by the collection agency. It's due to come off next year, but I may be applying for a mortgage loan before it does so I'm hoping I can get at least one removed. Is it the norm for the collection and original creditor to report negative accounts? And can I dispute this? It's past the SOL dates so I know I'm safe in regards to that. Anyone have experience with this? Thanks in advance!

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